# Staying Fit Before Age 70 Linked to Nearly Half the Alzheimer's Risk

*Objectively Measured Cardiorespiratory Fitness as a Potential Biomarker for Alzheimer's Disease Risk in Older Adults: Evidence from the Generation 100 Study.*

- **Evidence Level**: Moderate
- **Publication Types**: Journal Article
- **Journal**: Medicine and science in sports and exercise
- **Sample Size**: 1,491 dementia-free adults aged 70-77
- **Authors**: Brissach DE, Berg HH, Stensvold D, Ingeström EML, Walker TL, Laukkanen JA, Vasankari T, Sando SB, Tari AR, Wisløff U
- **Published**: 2026-07-03
- **Topics**: cardiorespiratory fitness, Alzheimer's, aging
- **DOI**: https://doi.org/10.1249/MSS.0000000000004064
- **Original Source**: https://pubmed.ncbi.nlm.nih.gov/42390354/

## Summary

Older adults with better heart and lung fitness had a much lower chance of developing Alzheimer's later on. People who stayed fit had about half the risk compared to the least fit. Trying to boost fitness after 70 didn't add much benefit. Entering old age already fit seemed to matter most.

## Practical Takeaway

This study suggests keeping heart and lung fitness up before old age may lower Alzheimer's risk.

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_Canonical: https://longevity-austria.com/en/research/staying-fit-before-age-70-linked-to-nearly-half-the-alzheimer-s-risk · Part of Longevity Cities · Updated 2026-07-03_